linux-kernel - Re: [PATCH] HPE BMC GXP SUPPORT

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 4 Feb 2022 12:31:06 +0000
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Joe Perches <joe@...ches.com>
Cc:     nick.hawkins@....com, verdun@....com,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Corey Minyard <minyard@....org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Lee Jones <lee.jones@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mark Brown <broonie@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        soc@...nel.org, Shawn Guo <shawnguo@...nel.org>,
        Stanislav Jakubek <stano.jakubek@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Hao Fang <fanghao11@...wei.com>,
        Mark Rutland <mark.rutland@....com>,
        Marc Zyngier <maz@...nel.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Wang Kefeng <wangkefeng.wang@...wei.com>,
        Lukas Bulwahn <lukas.bulwahn@...il.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-i2c@...r.kernel.org,
        openipmi-developer@...ts.sourceforge.net,
        linux-mtd@...ts.infradead.org, netdev@...r.kernel.org,
        linux-pwm@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-spi@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-watchdog@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] HPE BMC GXP SUPPORT

On Fri, Feb 04, 2022 at 04:18:24AM -0800, Joe Perches wrote:
> On Fri, 2022-02-04 at 12:05 +0000, Russell King (Oracle) wrote:
> > On Wed, Feb 02, 2022 at 10:52:50AM -0600, nick.hawkins@....com wrote:
> > > +	if (readb_relaxed(timer->control) & MASK_TCS_TC) {
> > > +		writeb_relaxed(MASK_TCS_TC, timer->control);
> > > +
> > > +		event_handler = READ_ONCE(timer->evt.event_handler);
> > > +		if (event_handler)
> > > +			event_handler(&timer->evt);
> > > +		return IRQ_HANDLED;
> > > +	} else {
> > > +		return IRQ_NONE;
> > > +	}
> > > +}
> 
> It's also less indented code and perhaps clearer to reverse the test
> 
> 	if (!readb_relaxed(timer->control) & MASK_TCS_TC)

This will need to be:

 	if (!(readb_relaxed(timer->control) & MASK_TCS_TC))

> 		return IRQ_NONE;
> 
> 	writeb_relaxed(MASK_TCS_TC, timer->control);
> 
> 	event_handler = READ_ONCE(timer->evt.event_handler);
> 	if (event_handler)
> 		event_handler(&timer->evt);
> 
> 	return IRQ_HANDLED;
> 
> 
> 

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!